File:Fse-flammability-limits-v1.svg

Fse-flammability-limits-v1.svg (SVG file, nominally 900 × 600 pixels, file size: 8 KB)

Summary

Methane in air: too lean below the lower flammable limit (5 %), too rich above the upper flammable limit (15 %); the stoichiometric mixture (about 9.5 %) lies in between. Based on Beyler (2002b), p. 2-172, and Zalosh (2002), p. 3-403.

Original vector illustration for Flammability limits, level 2 Intermediate.

Source basis: Beyler (2002b), pp. 2-172 and 2-174; Zalosh (2002), p. 3-403; Iqbal and Salley (2004), p. B-25 (stoichiometric mixture most flammable)
Alt text: Scale of methane in air from 0 to 20 %: too lean below 5 %, flammable from 5 to 15 %, too rich above 15 %, stoichiometric at 9.5 %.

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New drawing by Fire Safety Academy. © Fire Safety Academy.

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	16:53, 2 November 2026		900 × 600 (8 KB)	Lisa (talk \| contribs)	Watermark: Fire Safety Academy logo icon, 70 px, 45 % opacity

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Flammability limits

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Short title	Methane in air: too lean below the lower flammable limit (5 %), too rich above the upper flammable limit (15 %); the stoichiometric mixture (about 9.5 %) lies in between. Based on Beyler (2002b), p. 2-172, and Zalosh (2002), p. 3-403.
Image title	Scale of methane in air from 0 to 20 %: too lean below 5 %, flammable from 5 to 15 %, too rich above 15 %, stoichiometric at 9.5 %. Source basis: Beyler (2002b), pp. 2-172 and 2-174; Zalosh (2002), p. 3-403; Iqbal and Salley (2004), p. B-25 (stoichiometric mixture most flammable)
Width	900
Height	600